I'm a 'senior engineer' with ~5 years of industry experience and am considering moving on from this company because I don't want
1. Be pushed into a workflow that will cause my technical growth to stall or degrade 2. Be overseeing a bunch of AI-generated spaghetti 2-3 years from now
Feel free to address my specific situation but I'm interested in more general opinions.
You should stay there, learn the new tech, and see what happens.
If it works better than you expected, then your mind will be changed and you’ll be well positioned for the new economy.
If it turns out how you expect, now you have experience working with this tooling to inform your positions at your next company.
Either way, a few months in that environment will help your career.
Start looking for a new role that is better aligned with your expectations. You may find it harder than you expect. In which case, you might be glad you didn't burn your bridges in a pique over AI mandates by the CEO & CTO.